qa: Run unit tests on PHP 8.3 (#64)

Author: michalbundyra

.github/workflows/tests.yml

@@ -13,6 +13,7 @@ jobs:
     strategy:
       matrix:
         php-version:
+          - '8.3'
           - '8.2'
           - '8.1'
           - '8.0'
@@ -53,6 +54,52 @@ jobs:
           - '6.0.0'
 
         exclude:
+          # PHP 8.3 Exclusions
+          - php-version: '8.3'
+            phpunit-version: '9.4.0'
+          - php-version: '8.3'
+            phpunit-version: '9.3.0'
+          - php-version: '8.3'
+            phpunit-version: '9.2.0'
+          - php-version: '8.3'
+            phpunit-version: '9.1.0'
+          - php-version: '8.3'
+            phpunit-version: '9.0.0'
+          - php-version: '8.3'
+            phpunit-version: '8.4.0'
+          - php-version: '8.3'
+            phpunit-version: '8.3.0'
+          - php-version: '8.3'
+            phpunit-version: '8.2.0'
+          - php-version: '8.3'
+            phpunit-version: '8.1.0'
+          - php-version: '8.3'
+            phpunit-version: '8.0.0'
+          - php-version: '8.3'
+            phpunit-version: '7.5.0'
+          - php-version: '8.3'
+            phpunit-version: '7.4.0'
+          - php-version: '8.3'
+            phpunit-version: '7.3.0'
+          - php-version: '8.3'
+            phpunit-version: '7.2.0'
+          - php-version: '8.3'
+            phpunit-version: '7.1.0'
+          - php-version: '8.3'
+            phpunit-version: '7.0.0'
+          - php-version: '8.3'
+            phpunit-version: '6.5.0'
+          - php-version: '8.3'
+            phpunit-version: '6.4.0'
+          - php-version: '8.3'
+            phpunit-version: '6.3.0'
+          - php-version: '8.3'
+            phpunit-version: '6.2.0'
+          - php-version: '8.3'
+            phpunit-version: '6.1.0'
+          - php-version: '8.3'
+            phpunit-version: '6.0.0'
+
           # PHP 8.2 Exclusions
           - php-version: '8.2'
             phpunit-version: '9.4.0'